Deuteronomy 23:10 If there is among you any man who is not clean by reason of that which happens him by night, then shall he go outside of the camp. He shall not come within the camp: (See NAS)
Deuteronomy 23:11 but it shall be, when evening comes on, he shall bathe himself in water; and when the sun is down, he shall come within the camp. (See NAS)